Need a replacement catalytic converter for your 1991 Chevrolet Cavalier? MagnaFlow offers high-quality catalytic converters engineered for 1991 Chevrolet Cavalier sub-models and engine sizes. We combine efficient design and state-of-the-art manufacturing to meet or exceed required emissions standards. Select your 1991 Chevrolet Cavalier requirements and state vehicle registration to buy the best Cavalier catalytic converter online that fits your '91 Cavalier and meets your state’s emissions compliance.